order Perciformes vs family Gerreidae

order Perciformes and family Gerreidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Perciformes	Yes	No	No	No
family Gerreidae	Yes	No	No	No

order Perciformes (noun)	family Gerreidae (noun)
one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna	mojarras